remove () from postgres port value
remove () from postgres port value

* awx task container uses postgres port to wait for postgres to become
available before the container init continues. The () are problematic
and are removed.
* () was originally added to fix an openshift issues. That error does
NOT occur with this fix.

wwitzel3/awx,wwitzel3/awx,wwitzel3/awx,wwitzel3/awx